Source : Webster's Revised Unabridged Dictionary (1913)

Boatbill \Boat"bill`\, n. (Zo["o]l.)
   1. A wading bird ({Cancroma cochlearia}) of the tropical
      parts of South America. Its bill is somewhat like a boat
      with the keel uppermost.

   2. A perching bird of India, of the genus {Eurylaimus}.

Source : WordNet®

boatbill
     n : tropical American heron related to night herons [syn: {boat-billed
         heron}, {broadbill}, {Cochlearius cochlearius}]